Part of what makes or breaks an operating system is the font. When Google revealed Android 4.0 (Ice Cream Sandwich), they also showed off a new default font.
Roboto has had it’s fair share of criticism, put has it’s fans as well. I personally really like it, it very simple but looks good in almost any environment. I’m currently running an ICS ROM, and the font really makes texting and browsing the contacts a much more pleasurable experience.
Google have made Roboto available for download via the Android Design Guidelines page. It’s for use in developing Android applications, but you can probably use it for personal use also.
